NILE
CHEMICALS
SAFETY DATA SHEET
SECTION 1: Identification of the substance/mixture and of the
company/undertaking
1.1 Product identifiers
Product name : Selenous acid
Product Number : 191120
Brand : Nile
Index-No. : 034-002-00-8
CAS-No. :: 7783-00-8
1.2 Relevant identified uses of the substance or mixture and uses advised
against
Identified uses : Laboratory chemicals, Manufacture of substances
1.3 Details of the supplier of the safety data sheet
Company : Nile Chemicals
Masjid Bundar
MUMBAI - 400009
INDIA
Telephone : +91 022-66313162
Fax : +91 022-23454828
:
SECTION 2: Hazards identification
2.1 Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008
Acute toxicity, Inhalation (Category 3), H331
Acute toxicity, Oral (Category 3), H301
Specific target organ toxicity - repeated exposure (Category 2), H373
Acute aquatic toxicity (Category 1), H400
Chronic aquatic toxicity (Category 1), H410
For the full text of the H-Statements mentioned in this Section, see Section
16.
Classification according to EU Directives 67/548/EEC or 1999/45/EC
T Toxic R23/25
R33
N Dangerous for the
environment
R50/53
For the full text of the R-phrases mentioned in this Section, see Section 16.
2.2 Label elements
Labelling according Regulation (EC) No 1272/2008
Pictogram
Page 2 of 8
Signal word Danger
Hazard statement(s)
H301 Toxic if swallowed.
H331 Toxic if inhaled.
H373 May cause damage to organs through prolonged or repeated exposure.
H410 Very toxic to aquatic life with long lasting effects.
Precautionary statement(s)
P261 Avoid breathing dust.
P273 Avoid release to the environment.
P301 + P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/
physician.
P311 Call a POISON CENTER or doctor/ physician.
P501 Dispose of contents/ container to an approved waste disposal plant.
Supplemental Hazard
Statements
none
2.3 Other hazards - none
SECTION 3: Composition/information on ingredients
3.1 Substances
Synonyms : Selenious acid
Formula : H2SeO3
Molecular Weight : 128,97 g/mol
CAS-No. : 7783-00-8
EC-No. : 231-974-7
Index-No. : 034-002-00-8
Hazardous ingredients according to Regulation (EC) No 1272/2008
Component Classification Concentration
Selenious acid
CAS-No.
EC-No.
Index-No.
7783-00-8
231-974-7
034-002-00-8
Acute Tox. 3; STOT RE 2;
Aquatic Acute 1; Aquatic
Chronic 1; H301 + H331,
H373, H410
<= 100 %
Hazardous ingredients according to Directive 1999/45/EC
Component Classification Concentration
Selenious acid
CAS-No.
EC-No.
Index-No.
7783-00-8
231-974-7
034-002-00-8
T, N, R23/25 - R33 - R50/53 <= 100 %
For the full text of the H-Statements and R-Phrases mentioned in this Section,
see Section 16
SECTION 4: First aid measures
4.1 Description of first aid measures
General advice
Consult a physician. Show this safety data sheet to the doctor in attendance.
If inhaled
If breathed in, move person into fresh air. If not breathing, give artificial
respiration. Consult a physician.
In case of skin contact
Wash off with soap and plenty of water. Take victim immediately to hospital.
Consult a physician.
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In case of eye contact
Flush eyes with water as a precaution.
If swallowed
Never give anything by mouth to an unconscious person. Rinse mouth with water.
Consult a physician.
4.2 Most important symptoms and effects, both acute and delayed
The most important known symptoms and effects are described in the labelling
(see section 2.2) and/or in
section 11
4.3 Indication of any immediate medical attention and special treatment needed
no data available
SECTION 5: Firefighting measures
5.1 Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
5.2 Special hazards arising from the substance or mixture
Selenium/selenium oxides
5.3 Advice for firefighters
Wear self contained breathing apparatus for fire fighting if necessary.
5.4 Further information
no data available
SECTION 6: Accidental release measures
6.1 Personal precautions, protective equipment and emergency procedures
Wear respiratory protection. Avoid dust formation. Avoid breathing vapours,
mist or gas. Ensure
adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust.
For personal protection see section 8.
6.2 Environmental precautions
Prevent further leakage or spillage if safe to do so. Do not let product enter
drains. Discharge into the
environment must be avoided.
6.3 Methods and materials for containment and cleaning up
Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep
in suitable, closed
containers for disposal.
6.4 Reference to other sections
For disposal see section 13.
SECTION 7: Handling and storage
7.1 Precautions for safe handling
Avoid contact with skin and eyes. Avoid formation of dust and aerosols.
Provide appropriate exhaust ventilation at places where dust is formed.
For precautions see section 2.2.
7.2 Conditions for safe storage, including any incompatibilities
Store in cool place. Keep container tightly closed in a dry and
well-ventilated place.
hygroscopic
7.3 Specific end use(s)
Apart from the uses mentioned in section 1.2 no other specific uses are
stipulated
Page 4 of 8
SECTION 8: Exposure controls/personal protection
8.1 Control parameters
Components with workplace control parameters
8.2 Exposure controls
Appropriate engineering controls
Avoid contact with skin, eyes and clothing. Wash hands before breaks and
immediately after handling
the product.
Personal protective equipment
Eye/face protection
Face shield and safety glasses Use equipment for eye protection tested and
approved under
appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin protection
Handle with gloves. Gloves must be inspected prior to use. Use proper glove
removal technique
(without touching glove's outer surface) to avoid skin contact with this
product. Dispose of
contaminated gloves after use in accordance with applicable laws and good
laboratory practices.
Wash and dry hands.
The selected protective gloves have to satisfy the specifications of EU
Directive 89/686/EEC and
the standard EN 374 derived from it.
Full contact
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 480 min
If used in solution, or mixed with other substances, and under conditions
which differ from EN 374,
contact the supplier of the CE approved gloves. This recommendation is
advisory only and must
be evaluated by an industrial hygienist and safety officer familiar with the
specific situation of
anticipated use by our customers. It should not be construed as offering an
approval for any
specific use scenario.
Body Protection
Complete suit protecting against chemicals, The type of protective equipment
must be selected
according to the concentration and amount of the dangerous substance at the
specific workplace.
Respiratory protection
Where risk assessment shows air-purifying respirators are appropriate use a
full-face particle
respirator type N99 (US) or type P2 (EN 143) respirator cartridges as a backup
to engineering
controls. If the respirator is the sole means of protection, use a full-face
supplied air respirator. Use
respirators and components tested and approved under appropriate government
standards such
as NIOSH (US) or CEN (EU).
Control of environmental exposure
Prevent further leakage or spillage if safe to do so. Do not let product enter
drains. Discharge into
the environment must be avoided.
Page 5 of 8
SECTION 9: Physical and chemical properties
9.1 Information on basic physical and chemical properties
a) Appearance Form: solid
b) Odour no data available
c) Odour Threshold no data available
d) pH no data available
e) Melting point/freezing
point
Melting point/range: 70 °C
f) Initial boiling point and
boiling range
no data available
g) Flash point no data available
h) Evapouration rate no data available
i) Flammability (solid, gas) no data available
j) Upper/lower
flammability or
explosive limits
no data available
k) Vapour pressure no data available
l) Vapour density no data available
m) Relative density 3,004 g/cm3 at 25 °C
n) Water solubility no data available
o) Partition coefficient: noctanol/
water
no data available
p) Auto-ignition
temperature
no data available
q) Decomposition
temperature
no data available
r) Viscosity no data available
s) Explosive properties no data available
t) Oxidizing properties no data available
9.2 Other safety information
no data available
SECTION 10: Stability and reactivity
10.1 Reactivity
no data available
10.2 Chemical stability
Stable under recommended storage conditions.
10.3 Possibility of hazardous reactions
no data available
10.4 Conditions to avoid
no data available
10.5 Incompatible materials
Strong reducing agents, Organic materials, Powdered metals
10.6 Hazardous decomposition products
Other decomposition products - no data available
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In the event of fire: see section 5
SECTION 11: Toxicological information
11.1 Information on toxicological effects
Acute toxicity
LD50 Intravenous - mouse - 11 mg/kg
Skin corrosion/irritation
no data available
Serious eye damage/eye irritation
no data available
Respiratory or skin sensitisation
no data available
Germ cell mutagenicity
mouse
Micronucleus test
Carcinogenicity
IARC: 3 - Group 3: Not classifiable as to its carcinogenicity to humans
(Selenious acid)
Reproductive toxicity
no data available
Specific target organ toxicity - single exposure
no data available
Specific target organ toxicity - repeated exposure
May cause damage to organs through prolonged or repeated exposure.
no data available
Aspiration hazard
no data available
Additional Information
RTECS: VS7175000
Selenious acid is the most toxic form of selenium, ingestion is almost
invariably fatal. Stupor, respiratory
depression, hypotension, and death can result several hours post ingestion.
Severe hypotension develops
secondary both to decreased contractility from a toxic cardiomyopathy and to
inappropriately low
peripheral vascular resistance. Laboratory abnormalities include
thrombocytopenia, moderate hepatorenal
dysfunction, and elevated serum kinase levels., To the best of our knowledge,
the chemical, physical, and
toxicological properties have not been thoroughly investigated.
SECTION 12: Ecological information
12.1 Toxicity
no data available
12.2 Persistence and degradability
no data available
12.3 Bioaccumulative potential
no data available
12.4 Mobility in soil
no data available
12.5 Results of PBT and vPvB assessment
PBT/vPvB assessment not available as chemical safety assessment not
required/not conducted
12.6 Other adverse effects
Very toxic to aquatic life with long lasting effects.
Page 7 of 8
SECTION 13: Disposal considerations
13.1 Waste treatment methods
Product
Offer surplus and non-recyclable solutions to a licensed disposal company.
Dissolve or mix the material
with a combustible solvent and burn in a chemical incinerator equipped with an
afterburner and scrubber.
Contaminated packaging
Dispose of as unused product.
SECTION 14: Transport information
14.1 UN number
ADR/RID: 3283 IMDG: 3283 IATA: 3283
14.2 UN proper shipping name
ADR/RID: SELENIUM COMPOUND, SOLID, N.O.S. (Selenious acid)
IMDG: SELENIUM COMPOUND, SOLID, N.O.S. (Selenious acid)
IATA: Selenium compound, solid, n.o.s. (Selenious acid)
14.3 Transport hazard class(es)
ADR/RID: 6.1 IMDG: 6.1 IATA: 6.1
14.4 Packaging group
ADR/RID: II IMDG: II IATA: II
14.5 Environmental hazards
ADR/RID: no IMDG Marine pollutant: no IATA: no
14.6 Special precautions for user
no data available
SECTION 15: Regulatory information
This safety datasheet complies with the requirements of Regulation (EC) No.
1907/2006.
15.1 Safety, health and environmental regulations/legislation specific for the
substance or mixture
no data available
15.2 Chemical Safety Assessment
For this product a chemical safety assessment was not carried out
SECTION 16: Other information
Full text of H-Statements referred to under sections 2 and 3.
Acute Tox. Acute toxicity
Aquatic Acute Acute aquatic toxicity
Aquatic Chronic Chronic aquatic toxicity
H301 Toxic if swallowed.
H301 + H331 Toxic if swallowed or if inhaled
H331 Toxic if inhaled.
H373 May cause damage to organs through prolonged or repeated exposure.
H400 Very toxic to aquatic life.
Full text of R-phrases referred to under sections 2 and 3
N Dangerous for the environment
T Toxic
R23/25 Toxic by inhalation and if swallowed.
R33 Danger of cumulative effects.
R50/53 Very toxic to aquatic organisms, may cause long-term adverse effects in
the aquatic
environment.
Page 8 of 8
Further information
The above information is believed to be correct but does not purport to be all
inclusive and shall be
used only as a guide. The information in this document is based on the present
state of our knowledge
and is applicable to the product with regard to appropriate safety
precautions. It does not represent any
guarantee of the properties of the product. Nile Chemicals and its Affiliates
shall not be held
liable for any damage resulting from handling or from contact with the above
product.
the reverse side of invoice or packing slip for additional terms and
conditions of sale.
Product range
AA
BC
DM
N S T
Z